Shearing implement.



A. ANDERSON.

SHEARING IMPLEMENT. APPLKIATION FILED APR.18. 191s.

Patented Mar. 6, 1917.

. STATES Application filed April 1 I Y Toall wkom it may concern:

ployed for slitting, trimming or parting ments. i v

, A still further obiect is 'tofdevis'ea. shear- 1 Be it known that I, Axnn ANDERSON, a citizen of Sweden, and resident of the town of Clifton, in the county of Bergen and State of New Jersey, have invented certain 1 new and useful Improvements in Shearing Implements, of which the following is a specification. 1 i A This invention relates to shearing devices in which the cutting edges of .a pair of blades are made to cross each other, as for I example in scissors or the like, and itappertains more especially to implements emmetal sheets or plates.

One of the objects of theinvention is to produce an improved shearing instrument, of the nature set forth, wherein the cuttlng' elements are given a combined straight and sliding action calculated readily to clip the material operated upon, with the minimum expenditure of. power. l 1 I A further object is the production of a shearing tool of the character described, in

cluding actuating members and cuttingelements pivotally "interconnected in such 'a manner as to aiford a difi'erentialleverage serving to increase power utlhzed.

Another object'tis to provide a shearing" appliance of the species "mentioned capable 0 cutting around'corners and sharp curves. Still another object is the provision? of a shearing contrivance of the type specified;

embodying means for predeterminedl-y vary ing the range oi-travel of theifcu tting eleing instrument of the kind'rreferred. to,

which shall be composed offew, simplexand durable parts, eonvenientt'o manipulate and amenable to low cost of manufacture.";.--}

An-additionalobjectlisfso to mount and I edges in opposite directions, without having pivotthe'said actuating'niemhers and cut? ting, elements one upon an ot her, as toj'obtain' concurrent movements-of the shearing recourse to shifting joints; Y Other objects and advantages 'o'ffthemvention will become apparent as the specification' proceeds; I

' With the aforesaid objects in view, the invention consists .of the improvements, novel construction, arrangements and 'combinations of parts hereinafter described, de-

fined in the subjoined claims, and illustrated Specification of Letterai'latent.

'the' purchase of the I Y-ally, connect the cutting element to both the z-said members. The arrangement is sucbsthat' 8,1916. 'Seria1 No. 9 2,013. I

Patented Mar. 6, 1917.

their preferred embodiments by the an I nexed' drawings,- wherein like elements are j designated by the same reference, characters -throughout.-

v In said drawings v shears, in open position;

Fig. 2 is an end view thereof, as seen from the left hand side of" Fig. 1, the rear wardly located handle partsi'being omitted;

Figure. '1 is a side view ofthe improved Fig. 3 is a transverse section on the line 33 of Fig. 1, looking'toward the left, in the direction pointed out by the arrows; and

- Fig, 4 shows the reverse side 'of the shears,-

inverted as compared with 1,';,'and-- "in I closed-position. v y

In these several views the bers of the shears. These members are lofcated s1de by side, preferably in the same was 1111. i and 12 denote the handles or actuating'mem- A plane as shown, and though respectively adapted to-.be moved toward or. away from each other, they do not cross as iscommonly the case with'other implements apperta nlng to this class of. invention.

A pair of blades or cutting elements 13',

.14 isflexibly connected with the said actu ential movement is effected therebetween',

ating members, in such a way that a difi'ei'. Y

wherever there occurs adisplacement or- .Lch'ange of position of eitherone'or f'bothof fthe "members;

shaped and has its cutting edge along the upper or inner margin .of its base or jaw As represented in Figs- ,1. and/1, the blade '13 .is substantially L- o v fi-memben 13; The blade 14 on the other A designed to cross eachfother by degrees in in the figures last named. 5 Preferably the cutting eleme t 13 is con;

- hand,is shown as approximately straight, Y with the cutting edgeatyits free end. The: edges of these blades,litwill--be noted nor nially "meetat their. inner"corners'and are opening and-closing, as clearly indicated n t d y two p iiot srews "'15, 16 to the actuating members 11 ','"12 respectively. In a 7 similar manner, screws orbolts 17, 18 piv'ot I fthe-distancebetween the pivots 15 and 17 which re p y plethe two cutting m nts with the actuating. member 11, is

greater than that separating the pivots 16 and 18, which join the said elements to the actuating member 12. Besides, the. pivots" 15 and 16 connecting the element 13 with the two actuating members 11, 12 are farther apart from each other than the pivots 17 and 1 8, that connect the element14 withthe said actuating members, are spaced between the interval by'whi h h pivotsls Elude-18 Separated, Actual {reduction to pm 'tice of this improved-shearing device ha's borne out the theoryby" following stantially the above outlined; proportional arrangement of parts,produces1 an interrel atively di fl'erenti al :dispositi'o ,of-the pivotal connectionsQ-between the act ting members'and the cutting elements it will in-- variably yield the greatest obtainablefpiirchase for theainount of energy expended- As indicated in Fig. 1, thecutting ele-I- ments are so placed relativelyto 'eachfoth-er as to form normally between. them a pair ofshearing jaws, with-the element 14 lapping over the element 13, as at 14, when in an open position. The inner Lshaped element 13 has its jaw portion 13 located outside of the actuating member 12, and'therefore the latter is enabled always to clear the edge of a sheet or plate that is being cut, so that a very much sharperturn or curve can be effected or followed with this shearing implement than by using the ordinary type of snippers or shears, the handles of which stand at equal distances on both sides of the cutting edges. 13 externally of the pair of actuating handles, the operator of the shears can quickly cut around corners, which he could not reach nearly as well with similar tools not possessed of this feature.

Spacers 21, 22, conveniently in the nature of washers of same thickness as the inner blade 13, are interposed between the outer blade 14 and the pair of handles 11 and 12 around the pivots 17 and 18, respectively. These washers are used in order to bring the cutting edges of the two elements 13 and 14 into closer relation.

To afi'ord adequate bearing surfaces for guiding the several pivot screws and the thereto related portions of the actuating members, links 23, 24am provided on the side of the latter opposite from that where the cutting elements are located. The ends of these links are placed under the heads of the pivot screws, which in the present exemplification of the invention are shown as being of the button-head type. On the other side of the. shears, the threaded end of the pivot screws are engaged by nuts and underlying washers, which maintain the cutting e ements in proper relation to the actuating members. As shown, the link 23 is placed opposite the element 13 and takes over the pivots 15 and 16, while the link 24 engages Due to the offset of the aw the pivots'17 and 1 8 and corresponds in poone 1 .(25) extending between: the screws 16 ej'and 18, andtheother- (26)i-- reafching from the? screw 16toanother, somewhat smaller screw .27, ',passing throughv the handle 12. The latter named screw,is-sufliciently remote from the pivot '16 togafio'rd free-play. to the 13 in all positions thereof, the link 26 rvingas a guide for the'same. .To' the fastening; screwf27, above me tioned is hinged a latch 30, on the other side ,of the handle 12' from that where the link 26 is positioned. This 'latchha-s a hook 31,

adapted to takeover the outer edge of the handle 11, and therefore'available for the purpose of holding the pair ofhandles, to-

getherwith the cutting elements, inclosed position, as represented in Fig. I 4.

A- lever 32,-1-havinga ca'm portion 33, is

hinged on the pivot screw '16, between the before mentioned links 25 and 26. As illus- ,trated in Fig. 1, the minor axis of the cam freedom of motion to the element for its full working stroke. From this position the lever 32, which preferably is of resilient metal and has a smallprotuberance 34 on its underside, can be pried up and swung outward so that the said protuberance will drop into engagement when released, either with a correspondingly shaped opening or socket 35 in the link 26, or with the outer edge of the latter. In the meantime the cam portion 33 isswung over to a proportional extent into the path of the blade 14, and operates to limit the return or opening movement thereof relatively to the blade 13.

A spring 40 is partially coiled around a pin or screw 41, which straddles the space between the cutting element 14 and the ad jacent link 24. The terminals 42, 43 of this spring are located so as to bear respectively against the spacer 22 and the inner edge of the actuating member 11, and accordingly serving to open the jaws of the shears automatically after each cutting operation.

Grips 45 and 46 are attached to the ends of the actuating members 11 and 12 respectively, for convenience in operating the device.

While certain preferred embodiments of this device have been shown and described, it will be understood that changes in the form, arrangements, sizes, proportions and details thereof may be made, without departing from the scope of the invention as defined by the appended claims.

' Having described my invention what I desire to secure by Letters Patent and claim is:-

1. A shearing implement comprising actuating members adapted to be moved toward" a or away from each other, a cutting element?- disposed transversely at'or'near one'endof elements transversely fulcrumed each at two said members with its cutting edge projecting laterally therefrom,g a second cutt ngelement similarly transverse to 'the members and located inwardly thereon with re'lat1on,

to the first mentioned element, said second"; element having edge -ext'endln-g, beyond '2 said first named edge so as'toicoac't there-I,

with, and-Qpiv'ot' oining the e members, sald "connect-ions separately joining the members with said elements, "the;

pivots in said' *'connection{beingspaced at progressive distances apart, commen'clng at ith-meach one of the tions' permitting one of" ,ifasterthan the other. F- emlent comprising actuings n A shearing implement comprising actuating-*inembers laterally movable toward or away from each other, and separate cutting qpoints andat unequal distances thereon, said elements ibeing adapted to move simultaneousl {,to'g 'ther" with their edges converged to overlaponei another ext ri t yit 5:

..ating; ;niembers operatively disposedv one by as; elements with "coa point adjacent to said edges and thence 6X7 I tending inaclosed cycle; from element to element and-member to member a A shearing impleme' tcomprisingactu' -gj ating members operable toward or'away ",the lside' of thelotheii, cuttin' elements flexibly c' ii 11'iected; tosaidfmem ers to provide jcoact'ing j aws laterally proj ecting therefrom while in an. opei'i positionjf, and automatic means anchored to one of said elements serv-f sifde'of'bothmembers during actui ing to reopen-said 'imernbers subsequently to 8. A, shearing implement comprising actn-j'. ating members laterally movable; toward or. away one from theother, cuttingelements,

independently and .transversely connected to said members with their working edges off- .1

elements to the. members at unequal dis-- from each other, a pair of cutting elements:

disposed transversely of said members with converging edges at one side thereof, .and'a four-pivot connection between the members and said elements joiningthe same at unequal distances apart, the arrangement be ing such that thepivots spacing one-element with regard to the members 'and'th'e other element are closer together than the pivots spacing the same members and said other element from the first mentioned element,

whereby a differential shearing action is produced between the pair of elements.

4. A shearing implement comprising separated actuating members movable laterallyv pivot located intermediate of the shortest f and the longest of said distances, said" cam I being adapted to contact with one of the elements in various positions and thereby graduate the relative movement between said working edges.

' 9, -A shearing lmplement comprising actuv ating members movable from converged to toward or away from each other, transversely disposed cutting elements on said members, said elements having convergent edges diiferentlygofl'set to one side of the latter, and pivots jbining the elements to the members independently one of the other, the pivots for the element having the outer edge being spaced farther apart than the pivots for the element having the inner edge.

A shearing implement comprising actuating members arranged in'juxtaposition so as to permit lateral movement thereof toward or away one from the other, outting elements disposed transversely of said members with their edges converging exteriorly on one side of the latter, and pivotal connections at unequal distances apart between the members and said elements, the connections adjacent to said converging edges being at a less distance from each other than the connections remote therefrom.-

substantially parallel relation on the same side of each other, cutting elements disposed transversely of said members, and pivots connecting said elements with the members, said pivots being located farther apart on one member than on the other, and connectinn thetwo elements atiunequal distances with each-member.

1 10. A shearing implement comprising actuating members of different operative lengths adapted to be moved toward or away from each other, cutting elements of unequal,

set to one side thereof, pivotsjoining said lengths transversely joining said members;

with said elements in fixed pivotal relation,

the arrangement being such that the distance of the pivots between the elements is greater on the shorter member than on the longer member, and the spacing of the pivots between the members is less along the shorter element than on the longer. element. Signed-at the borough of'Manhattan, in the 'county of NewYork and State of New York this 17th day of April, D. 1916.

AXEL ANDERSON.

Witnesses: H. C. KARLSON, Y W. H.;GEE. 

